<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>员工列表</title>
</head>
<body>
<input type="text" placeholder="员工姓名" id="i1">
<input type="text" placeholder="员工工资" id="i2">
<input type="text" placeholder="员工工作" id="i3">
<input type="button" value="添加" onclick="f()">
<table border="1">
  <caption>员工列表</caption>
  <tr>
    <th>姓名</th>
    <th>工资</th>
    <th>工作</th>
  </tr>
</table>
<script>
  let i1 = document.querySelector("#i1")
  let i2 = document.querySelector("#i2")
  let i3 = document.querySelector("#i3")
  let t = document.querySelector("table")
  function f() {
    /* 创建 1个tr 3个td */
    let tr = document.createElement("tr");
    let nameTd = document.createElement("td");
    let salaryTd = document.createElement("td");
    let jobTd = document.createElement("td");

    /* 将文本框里面的内容设置td */
    nameTd.innerText = i1.value;
    salaryTd.innerText = i2.value;
    jobTd.innerText = i3.value;

    /* 将td里的内容添加给tr */
    tr.append(nameTd,salaryTd,jobTd);

    /* 将tr里的内容添加给table */
    t.append(tr);
  }
</script>
</body>
</html>